Fix some compiler warnings:

* Remove some set-but-not-used variables
 * Make a convenience function return void (we weren't using the
   return code, anyway)
 * Mark a function as inline (it was supposed to be inline anyway)

Reviewed by Dave Goodell.

cmr=v1.7.5:reviewer=ompi-rm1.7:subject=Fix usnic BTL compiler warnings

This commit was SVN r30160.

ompi/mca/btl/usnic/btl_usnic_module.c

@@ -365,7 +365,6 @@ prepare_src_small(
     ompi_btl_usnic_send_frag_t *frag;
     ompi_btl_usnic_small_send_frag_t *sfrag;
     size_t payload_len;
-    int rc;
 
     payload_len = *size + reserve;
     assert(payload_len <= module->max_frag_payload); /* precondition */
@@ -399,7 +398,7 @@ prepare_src_small(
     if (OPAL_UNLIKELY(opal_convertor_need_buffers(convertor))) {
         /* put user data just after end of 1st seg (upper layer header) */
         assert(payload_len <= module->max_frag_payload);
-        rc = usnic_convertor_pack_simple(
+        usnic_convertor_pack_simple(
                 convertor,
                 (IOVBASE_TYPE*)(frag->sf_base.uf_src_seg[0].seg_addr.lval + reserve),
                 *size,
@@ -439,14 +438,11 @@ pack_chunk_seg_from_frag(
     size_t copylen;
     size_t seg_space;
     size_t max_data;
-    mca_btl_base_descriptor_t *desc;
 
     assert(NULL != lfrag);
     /* never should be attempting to pack if we've already packed everything */
     assert(lfrag->lsf_pack_bytes_left > 0);
 
-    desc = &lfrag->lsf_base.sf_base.uf_base;
-
     seg = ompi_btl_usnic_chunk_segment_alloc(module);
     if (OPAL_UNLIKELY(NULL == seg)) {
         /* TODO look at ways to deal with this case more gracefully, possibly as
@@ -1019,11 +1015,8 @@ usnic_handle_large_send(
     ompi_btl_usnic_large_send_frag_t *lfrag;
     ompi_btl_usnic_btl_chunk_header_t *chp;
     ompi_btl_usnic_send_segment_t *sseg;
-    mca_btl_base_descriptor_t *desc;
     size_t payload_len;
 
-    desc = &frag->sf_base.uf_base;
-
     assert(frag->sf_base.uf_type == OMPI_BTL_USNIC_FRAG_LARGE_SEND);
     lfrag = (ompi_btl_usnic_large_send_frag_t *)frag;
     if (lfrag->lsf_cur_offset == 0) {

ompi/mca/btl/usnic/btl_usnic_util.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2013-2014 Cisco Systems, Inc.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -16,15 +16,16 @@
 #include "btl_usnic_module.h"
 
 /* avoid "defined but not used" warnings */
-static int __opal_attribute_always_inline__ usnic_fls(int x)
+static inline int __opal_attribute_always_inline__ usnic_fls(int x)
     __opal_attribute_unused__;
 
-static int __opal_attribute_always_inline__ usnic_fls(int x)
+static inline int __opal_attribute_always_inline__ usnic_fls(int x)
 {
     int r = 32;
 
-    if (!x)
+    if (!x) {
         return 0;
+    }
     if (!(x & 0xffff0000u)) {
         x <<= 16;
         r -= 16;
@@ -48,8 +49,7 @@ static int __opal_attribute_always_inline__ usnic_fls(int x)
 }
 
 /* a helper function that just declutters convertor packing */
-static inline
-int
+static inline void
 usnic_convertor_pack_simple(
     opal_convertor_t *convertor,
     void *dest,
@@ -69,8 +69,6 @@ usnic_convertor_pack_simple(
         BTL_ERROR(("opal_convertor_pack error"));
         abort();    /* XXX */
     }
-
-    return OMPI_SUCCESS;
 }
 
 /*